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Finding the Fourth Proportional to 2,753.11, 4,129.52 and 903.99

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Solution

The fourth proportional to 2,753.11, 4,129.52 and 903.99 is: 1,355.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,753.11 : 4,129.52 = 903.99 : x
  2. Step 2: Convert to fraction form
    2,753.11/4,129.52 = 903.99/x
  3. Step 3: Cross multiply
    2,753.11x = 4,129.52 × 903.99
  4. Step 4: Simplify right side
    2,753.11x = 3,733,044.78
  5. Step 5: Solve for x
    x = 3,733,044.78/2,753.11
  6. Step 6: Final answer
    x = 1,355.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.